The STAR collaboration[1]} has published a measurement of charge
particle azimuthal correlations consistent with CME expectations. In
Ref.[2]} and used by STAR the CME can be indirectly approached
through a two-particle azimuthal correlation given by
\(\gamma = \langle cos(\phi _1 + \phi _2 - 2\Psi _{RP}) \rangle = \langle cos(\phi _1-\Psi _{RP}) cos(\phi _2-\Psi _{RP}) \rangle - \langle sin(\phi _1-\Psi _{RP}) sin(\phi _2-\Psi _{RP}) \rangle ,\) 
